Fresh peas are often consumed as a side dish, with boiled and seasoned butter and / or mint. Salt and pepper are usually also added to peas, but when it is already served. Fresh peas are also used to prepare meat pie baked in a pot (form), salads and casseroles of rice or potatoes with vegetables. Peas are boiled and used for soups and main dishes, such as pea porridge. Nowadays, peas are usually cooked or stewed. Heating destroys cell walls and makes the taste more sweet, and nutrients more accessible. Pea soup is eaten in many other parts of the world, including Northern and Central Europe, in Russia, Iran, Iraq and India. Processed peas are mature peas that have been dried, soaked, and then undergone hot processing to prevent spoilage. Ready-made peas are sometimes sold dried and coated with wasabi, salt or other spices.